C + + Programming _ Chapter 5th _ Special functions and members

Example 5.1

Analyze the order in which destructors and constructors are called in the following program.

1#include <iostream>2 3 using namespacestd;4 5 class Object6 {7 Private:8     intVal;9  Public:Ten     Object(): Val (0) One     { Acout <<"Ddfault constructor for object"<<Endl; -     } -     Object(inti): Val (i) the     { -cout <<"Constructor for Object"<< Val <<Endl; -     } -~Object() +     { -cout <<"destructor for Object"<< Val <<Endl; +     } A }; at  - classContainer - { - Private: -     ObjectOne//The initialization order is related to the order in which the object members are generated -     Objectboth;//first initialization in the front row in     intdata; -  Public: toContainer ():d ATA (0) +     { -cout <<"Ddfault constructor for object"<<Endl; the     } *ContainerintIintJintk); $~container ()Panax Notoginseng     { -cout <<"destructor for Object"<< Data <<Endl; the     } + }; A  theContainer::container (intIintJintk): II (i), one (j)//independent of initialization list order + { -data =K; $cout <<"Constructor for Container"<< Data <<Endl; $ } -  - voidMain () the { -Container obj, Anobj (5,6,Ten);Wuyi  theSystem"Pause"); -}

Example 5.2

Analyze the output of the following program.

123

C + + Programming _ Chapter 5th _ Special functions and members